"By Your Side" is a song by Hoody, a South Korean singer. The lyrics are about being in love and being happy with someone. The song talks about always being by their side, not caring about anything else, and feeling crazy in love. The singer describes feeling an overwhelming affection for their partner and wanting to be with them all the time. The lyrics also mention the sunshine and how it represents the good times they have together. The song conveys the emotions and excitement of being in a loving and carefree relationship.